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Texas Instruments OPA301AIDBVT
- Part No.:
- OPA301AIDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
OPA301AIDBVT.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:699
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Product details
Overview
OPA301AIDBVT from Texas Instruments is a single-channel, low-noise, fast-settling CMOS operational amplifier optimized for 16-bit ADC input driving. It delivers 150MHz unity-gain bandwidth, 3nV/√Hz input voltage noise, and 150ns 16-bit settling time with ±100mV output swing from rails on +2.7V to +5.5V supply - enabling high-fidelity signal conditioning in portable data acquisition systems.
For engineers reviewing the OPA301AIDBVT datasheet, OPA301AIDBVT pinout, OPA301AIDBVT application, or OPA301AIDBVT equivalent, key selection criteria include its SOT-23-5 package footprint, shutdown capability (5µA quiescent current), unity-gain stability, and verified performance driving 1.25MSPS 16-bit ADCs like the ADS8401 under single-supply conditions.
Technical Context
The OPA301AIDBVT implements a classic two-stage CMOS topology with folded-cascode gain stage and Class AB rail-to-rail output, supporting stable unity-gain operation without external compensation. Its input stage features ultra-low bias current (±0.1pA typ) and high common-mode input range (V− − 0.2V to V+ − 0.9V), while the output delivers 75mV swing from rails into 2kΩ loads.
Unlike the OPA300 variant, the OPA301AIDBVT lacks an enable/shutdown pin - confirmed by its 5-pin SOT-23 pinout (V+, −In, Out, V−, +In) and absence of Enable function in electrical specifications. It operates across −40°C to +125°C and is specified for single-supply use only, with no dual-supply offset or PSRR characterization beyond V+ and V− rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bandwidth | 150MHz unity-gain bandwidth enables accurate amplification of signals up to ~75MHz at 3dB roll-off in closed-loop G=2 configuration. |
| Settling Time | 150ns to 16-bit accuracy (0.0015%) ensures full precision capture for 1.25MSPS ADCs like ADS8401 without cycle loss. |
| Voltage Noise | 3nV/√Hz at >1MHz supports low-noise preamplification of weak sensor or RF signals without degrading SNR. |
| Supply Range | +2.7V to +5.5V single supply simplifies power design in battery-powered instrumentation and portable test equipment. |
| Output Swing | Within 100mV of both rails into 2kΩ allows maximum dynamic range utilization when interfacing with 16-bit SAR or sigma-delta ADCs. |
| THD+N | 0.003% at 1kHz, 3VPP, G=1 preserves signal fidelity in audio and IF amplifier stages requiring <−90dBc harmonic suppression. |
| Quiescent Current | 9.5mA typical at 25°C balances speed and power for continuous high-speed signal chain operation. |
Pinout & Package
SOT-23-5 package (DBV) with 1.6mm × 2.9mm footprint, 0.95mm height, and 0.95mm pin pitch - compatible with standard pick-and-place and reflow processes for space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (V−) | Negative supply terminal | Reference ground node for single-supply operation; must be connected directly to system ground plane with low-inductance path. |
| 2 (+In) | Non-inverting input | High-impedance CMOS input (10¹³Ω || 3pF) accepting DC-coupled or AC-coupled signals within common-mode range. |
| 3 (−In) | Inverting input | Differential input node; used with feedback network to set closed-loop gain and reject common-mode interference. |
| 4 (Out) | Amplifier output | Rail-to-rail capable output driving capacitive loads up to ~5pF directly; requires series resistor for >10pF loads to maintain stability. |
| 5 (V+) | Positive supply terminal | Accepts +2.7V to +5.5V; requires local 0.1µF ceramic bypass capacitor placed ≤2mm from pin to minimize supply noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable | No external compensation required - reduces BOM count and layout complexity in G=1 buffer and active filter designs. |
| 16-bit settling in 150ns | Enables full-resolution sampling at 1.25MSPS without dead-time insertion or oversampling penalties. |
| Low 3nV/√Hz noise | Maintains ≥90dB SNR for 16-bit systems with input-referred noise below 1µV RMS over 100kHz bandwidth. |
| Single-supply rail-to-rail I/O | Supports direct interface to unipolar ADC references (e.g., 2.5V or 4.096V) without level-shifting circuitry. |
| Industrial temperature range | Guaranteed parametric performance from −40°C to +125°C for deployment in automotive engine control and industrial PLC modules. |
Applications
| 16-bit ADC Input Driver | Low-Noise Preamplifier |
|---|---|
Use Scenario: Driving the analog input of the ADS8401 16-bit, 1.25MSPS SAR ADC in a portable spectrum analyzer front-end. IC Role / Device Role / Timing Role: Buffer and gain-stage amplifier providing low-distortion, fast-settling signal conditioning immediately prior to ADC sampling. Use Value: Achieves −99.3dB THD and 84.3dB SNR as measured in TI's reference design, preserving full 16-bit ENOB at 10kHz input frequency. | Use Scenario: Amplifying microvolt-level outputs from piezoelectric vibration sensors in predictive maintenance edge nodes. IC Role / Device Role / Timing Role: First-stage transimpedance or non-inverting amplifier with minimal added noise and drift. Use Value: 3nV/√Hz input voltage noise and 2.5µV/°C offset drift ensure sub-LSB error contribution across −40°C to +85°C operating range. |
| IF/RF Amplifier | Active Filtering |
Use Scenario: Intermediate-frequency amplification in 433MHz ISM-band receiver chains before quadrature demodulation. IC Role / Device Role / Timing Role: Fixed-gain, broadband voltage amplifier operating at 10–50MHz with flat group delay. Use Value: 0.1dB gain flatness maintained up to 100MHz (Figure 5-6) and −100dBc 2nd/3rd harmonic distortion at 1MHz support clean IF signal integrity. | Use Scenario: Implementing 4th-order low-pass anti-aliasing filters in medical ECG digitizers with cutoff at 150Hz. IC Role / Device Role / Timing Role: Dual-opamp biquad section (using paired OPA301 devices) in MFB or state-variable topology. Use Value: 150MHz GBW provides >1000× separation between filter cutoff and unity-gain frequency, minimizing Q-sensitivity and passband ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-noise op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA300AIDBVT | Includes enable/shutdown pin (pin 6); otherwise identical bandwidth, noise, and settling specs. | Required where dynamic power gating is needed during ADC idle cycles to reduce average current. | Select OPA300AIDBVT if system firmware controls amplifier enable/disable; OPA301AIDBVT is preferred for always-on signal paths. |
| ADA4897-1ARMZ | Lower 1nV/√Hz noise, 220MHz GBW, but higher 12.5mA quiescent current and SOIC-8 only. | Better suited for ultra-low-noise, higher-bandwidth applications where board area and power budget allow. | Choose ADA4897-1ARMZ when noise floor is critical and SOT-23-5 footprint is not mandatory. |
Compared with OPA300AIDBVT, the OPA301AIDBVT saves one PCB pad and eliminates enable logic routing - reducing layout complexity and cost in fixed-function signal chains. Against ADA4897-1ARMZ, it trades 2.3× lower noise for 25% lower supply current and 40% smaller package, favoring portable, battery-sensitive designs.
Availability
OPA301AIDBVT is available at Aetrix Electronics and suitable for portable instrumentation, industrial data loggers, and medical sensor interfaces requiring stable component supply and guaranteed −40°C to +125°C operation.
Supply support for OPA301AIDBVT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The OPAx30x product line was designed specifically for high-resolution, high-speed data acquisition systems - prioritizing 16-bit settling accuracy, low distortion, and single-supply usability in compact packages.
FAQ
What is the maximum capacitive load the OPA301AIDBVT can drive stably in unity-gain configuration?
The OPA301AIDBVT is stable driving up to ~5pF of capacitive load directly in unity-gain configuration, as shown in Figure 5-16 of the datasheet. For larger loads (e.g., ADC input capacitance + PCB trace), a series resistor (RS) of 10–55Ω should be added between the output and load to maintain phase margin - with exact value dependent on total CL per Figure 7-1.
Does the OPA301AIDBVT support dual-supply operation?
No, the OPA301AIDBVT is specified and characterized exclusively for single-supply operation from +2.7V to +5.5V. Its input common-mode range extends to V− − 0.2V and V+ − 0.9V, and output swing is referenced to those rails - no split-supply offset, PSRR, or thermal performance data is provided for ±V operation.
How does the OPA301AIDBVT differ from the OPA300AIDBVT?
The OPA301AIDBVT is identical to the OPA300AIDBVT in bandwidth (150MHz), noise (3nV/√Hz), settling (150ns), and package (SOT-23-5), but omits the enable/shutdown pin. The OPA300AIDBVT uses a 6-pin SOT-23 (DBV) with pin 6 as Enable; OPA301AIDBVT uses 5-pin DBV with pins V−, +In, −In, Out, V+ - confirmed in Figures 4-2 and 4-3.
What is the typical input bias current of the OPA301AIDBVT at 25°C?
The typical input bias current of the OPA301AIDBVT is ±0.1pA at 25°C, with a maximum of ±5pA over −40°C to +125°C. This ultra-low value results from its CMOS input stage and enables high-impedance sensor interfacing (e.g., pH electrodes or photodiode TIA feedback networks) without significant offset error.
Is the OPA301AIDBVT RoHS compliant and lead-free?
Yes, the OPA301AIDBVT is RoHS compliant and features lead-free NIPDAU (nickel-palladium-gold) terminal finish. Its MSL rating is Level-2-260°C-1 year, and it is qualified for reflow soldering per JEDEC J-STD-020 - confirmed in TI's PACKAGE OPTION ADDENDUM dated 15-Jul-2026.
OPA301AIDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 80V/µs
- Gain Bandwidth Product:
- 150 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 9.5mA
- Current - Output / Channel:
- 70 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
OPA301AIDBVT FAQ
1.How can I place an order for OPA301AIDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA301AIDBVT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for OPA301AIDBVT reliable?
The price and inventory of OPA301AIDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA301AIDBVT is usually 5 days.
3.What payment methods are accepted for OPA301AIDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA301AIDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA301AIDBVT?
OPA301AIDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA301AIDBVT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for OPA301AIDBVT?
For technical support, including OPA301AIDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA301AIDBVT requirements.
6.How does Aetrix verify that OPA301AIDBVT is sourced from the original manufacturer or authorized distributors?
All OPA301AIDBVT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that OPA301AIDBVT meets industry standards.
7.What is the process for return or replacement of OPA301AIDBVT?
All OPA301AIDBVT units undergo pre-shipment inspection (PSI). If there is an issue with OPA301AIDBVT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The OPA301AIDBVT part is unused and in its original packaging.
Return procedure for OPA301AIDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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